- From: JUSTIN ABRAHAM <abrjus002_at_uct.ac.za>
- Date: Mon, 17 Sep 2007 08:44:55 +0200
i'm running in a linux enviroment. i downloaded the DAQmxBase for linux from the ni website. i had problems trying to install it. i think its because i'm using SIDUX and the DAQmxBase is made for Mandrivia/RedHat/SUSE?? so i had a go at comedilib and its working well... besides the whole simultaneous read/write thing. i tested the ao_waveform and ai_waveform separately and they are working fine. i'm pretty sure the card supports simultaneous read/write. i downloaded the mailbox archive and found a guy that said he was able to simultaneously read/write with the same card (NI PCI-MIO-16E1). tried mailing him... no reply... the post was made in 2001, so there's a good chance he's contact info has changed etc... is there some way you could provide with some example code that you used to read/write simultaneously.... i need some direction... >>> Heinrich du Toit <heinrichdt_at_tlabs.ac.za> 09/17/07 7:47 AM >>> Hi I'm unsure what the limitations of the Comedi drivers are. But I've used NI cards unders the NI DAQmxBase drivers from NI. There where many different limitations. I was able to do analog read/write at the same time with an NI-6229 card. So I had a waveform output on 2 channels and read them back in 2 other channels :) Not sure if your card supports this. But there is no way to sync the 2 processes. NI has some fairly weird limitations inside. Some hardware some software. So I'm unsure of Comedi. Do you have the windows measurement studio software? Maybe first check if that can do what you want? Maybe your card doesn't support it. Further I suggest first testing ao waveform and then ai waveform seperately. btw. You will need to seperate cmd's in your comedi program if this is 2 work.
Received on 2007-09-17Z05:44:55